---
url: "https://pay.weixin.qq.com/doc/v3/merchant/4014399423-go.md"
title: "商户单号查询授权结果-请求示例-go"
doc_id: 4014399423
example_lang: "go"
---

## Go


需配合微信支付工具库 wxpay\_utility 使用，请参考 [Go](https://pay.weixin.qq.com/doc/v3/merchant/4015119334.md)

```
package main

import (
	"demo/wxpay_utility" // 引用微信支付工具库，参考 https://pay.weixin.qq.com/doc/v3/merchant/4015119334
	"encoding/json"
	"fmt"
	"net/http"
	"net/url"
	"strings"
	"time"
)

func main() {
	// TODO: 请准备商户开发必要参数，参考：https://pay.weixin.qq.com/doc/v3/merchant/4013070756
	config, err := wxpay_utility.CreateMchConfig(
		"19xxxxxxxx",                 // 商户号，是由微信支付系统生成并分配给每个商户的唯一标识符，商户号获取方式参考 https://pay.weixin.qq.com/doc/v3/merchant/4013070756
		"1DDE55AD98Exxxxxxxxxx",      // 商户API证书序列号，如何获取请参考 https://pay.weixin.qq.com/doc/v3/merchant/4013053053
		"/path/to/apiclient_key.pem", // 商户API证书私钥文件路径，本地文件路径
		"PUB_KEY_ID_xxxxxxxxxxxxx",   // 微信支付公钥ID，如何获取请参考 https://pay.weixin.qq.com/doc/v3/merchant/4013038816
		"/path/to/wxp_pub.pem",       // 微信支付公钥文件路径，本地文件路径
	)
	if err != nil {
		fmt.Println(err)
		return
	}

	request := &GetRequest{
		OutAuthorizationNo:     wxpay_utility.String("plfk2020042013"),
		IsDisplayAuthorization: wxpay_utility.Bool(true),
	}

	response, err := Get(config, request)
	if err != nil {
		fmt.Printf("请求失败: %+v\n", err)
		// TODO: 请求失败，根据状态码执行不同的处理
		return
	}

	// TODO: 请求成功，继续业务逻辑
	fmt.Printf("请求成功: %+v\n", response)
}

func Get(config *wxpay_utility.MchConfig, request *GetRequest) (response *UserConfirmAuthorizationEntity, err error) {
	const (
		host   = "https://api.mch.weixin.qq.com"
		method = "GET"
		path   = "/v3/fund-app/mch-transfer/user-confirm-authorization/out-authorization-no/{out_authorization_no}"
	)

	reqUrl, err := url.Parse(fmt.Sprintf("%s%s", host, path))
	if err != nil {
		return nil, err
	}
	reqUrl.Path = strings.Replace(reqUrl.Path, "{out_authorization_no}", url.PathEscape(*request.OutAuthorizationNo), -1)
	query := reqUrl.Query()
	if request.IsDisplayAuthorization != nil {
		query.Add("is_display_authorization", fmt.Sprintf("%v", *request.IsDisplayAuthorization))
	}
	reqUrl.RawQuery = query.Encode()
	httpRequest, err := http.NewRequest(method, reqUrl.String(), nil)
	if err != nil {
		return nil, err
	}
	httpRequest.Header.Set("Accept", "application/json")
	httpRequest.Header.Set("Wechatpay-Serial", config.WechatPayPublicKeyId())
	authorization, err := wxpay_utility.BuildAuthorization(config.MchId(), config.CertificateSerialNo(), config.PrivateKey(), method, reqUrl.RequestURI(), nil)
	if err != nil {
		return nil, err
	}
	httpRequest.Header.Set("Authorization", authorization)

	client := &http.Client{}
	httpResponse, err := client.Do(httpRequest)
	if err != nil {
		return nil, err
	}
	respBody, err := wxpay_utility.ExtractResponseBody(httpResponse)
	if err != nil {
		return nil, err
	}
	if httpResponse.StatusCode >= 200 && httpResponse.StatusCode < 300 {
		// 2XX 成功，验证应答签名
		err = wxpay_utility.ValidateResponse(
			config.WechatPayPublicKeyId(),
			config.WechatPayPublicKey(),
			&httpResponse.Header,
			respBody,
		)
		if err != nil {
			return nil, err
		}
		response := &UserConfirmAuthorizationEntity{}
		if err := json.Unmarshal(respBody, response); err != nil {
			return nil, err
		}

		return response, nil
	} else {
		return nil, wxpay_utility.NewApiException(
			httpResponse.StatusCode,
			httpResponse.Header,
			respBody,
		)
	}
}

type GetRequest struct {
	OutAuthorizationNo     *string `json:"out_authorization_no,omitempty"`
	IsDisplayAuthorization *bool   `json:"is_display_authorization,omitempty"`
}

func (o *GetRequest) MarshalJSON() ([]byte, error) {
	type Alias GetRequest
	a := &struct {
		OutAuthorizationNo     *string `json:"out_authorization_no,omitempty"`
		IsDisplayAuthorization *bool   `json:"is_display_authorization,omitempty"`
		*Alias
	}{
		// 序列化时移除非 Body 字段
		OutAuthorizationNo:     nil,
		IsDisplayAuthorization: nil,
		Alias:                  (*Alias)(o),
	}
	return json.Marshal(a)
}

type UserConfirmAuthorizationEntity struct {
	OutAuthorizationNo *string                            `json:"out_authorization_no,omitempty"`
	Appid              *string                            `json:"appid,omitempty"`
	Openid             *string                            `json:"openid,omitempty"`
	UserDisplayName    *string                            `json:"user_display_name,omitempty"`
	AuthorizationId    *string                            `json:"authorization_id,omitempty"`
	State              *AuthorizationState                `json:"state,omitempty"`
	AuthorizeTime      *string                            `json:"authorize_time,omitempty"`
	CloseInfo          *UserConfirmAuthorizationCloseInfo `json:"close_info,omitempty"`
	TransferSceneId    *string                            `json:"transfer_scene_id,omitempty"`
	UserRecvPerception *string                            `json:"user_recv_perception,omitempty"`
	CreateTime         *time.Time                         `json:"create_time,omitempty"`
	PackageInfo        *string                            `json:"package_info,omitempty"`
}

type AuthorizationState string

func (e AuthorizationState) Ptr() *AuthorizationState {
	return &e
}

const (
	AUTHORIZATIONSTATE_TAKING_EFFECT     AuthorizationState = "TAKING_EFFECT"
	AUTHORIZATIONSTATE_CLOSED            AuthorizationState = "CLOSED"
	AUTHORIZATIONSTATE_WAIT_USER_CONFIRM AuthorizationState = "WAIT_USER_CONFIRM"
)

type UserConfirmAuthorizationCloseInfo struct {
	CloseTime   *string      `json:"close_time,omitempty"`
	CloseReason *CloseReason `json:"close_reason,omitempty"`
}

type CloseReason string

func (e CloseReason) Ptr() *CloseReason {
	return &e
}

const (
	CLOSEREASON_CLOSE_VIA_MCH_API        CloseReason = "CLOSE_VIA_MCH_API"
	CLOSEREASON_USER_CLOSE               CloseReason = "USER_CLOSE"
	CLOSEREASON_USER_OVERDUE_UNCONFIRMED CloseReason = "USER_OVERDUE_UNCONFIRMED"
	CLOSEREASON_TRANSFER_RISK            CloseReason = "TRANSFER_RISK"
	CLOSEREASON_USER_ACCOUNT_ABNORMAL    CloseReason = "USER_ACCOUNT_ABNORMAL"
)

```
